Hitachi RAS-10HRNM, Service Manual, Page: 387 / 482

3 Check to ensure the LED201 (Red) of the inverter PCB is off when opening P-mounting plate.
4 Remove other electrical components according to the procedure below, and the figures on Chapter 10.
D A N G E R
• Check that the LED201 (red) located on the “W” surface PCB is OFF when opening the P-mounting plate.
• Do not touch the electrical components when LED201 (Red) located on the “W” surface PCB is ON in order to
avoid an electrical shock.
N O T E
• Disconnect all the wires connected with the smoothing capacitor (CB, CB1, CB2, CA).
• The wire has polar characters. Identify the wire mark band and the indication on the smoothing capacitor when
wire connecting.
• Remove the two (2) screws fixing the smoothing capacitor and remove the smoothing capacitor.
• Disconnect all the wires connecting with the magnetic contactor (CMC1).
• Remove the two (2) screws fixing the magnetic contactor and remove the magnetic contactor.
• Remove the four (4) screws fixing the reactor and remove the reactor (DCL).
• Disconnect all the wires connected with the noise filter (NF1).
• Remove the noise filter by clamping the top of the holder (6 portions) with a pincher.
• Identify the terminal numbers with mark band. When reassembling, the terminals have to be connected to the
correct numbers . If incorrectly connected, malfunctions or damages will occur.
10.2.3 Oudoor units RAS-(8-12)HRNM
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Removing service cover
N O T E
• Remove the main parts according to the following procedures.
– To reassemble perform the procedures in reverse.
– To prevent contamination of the refrigerant with water or foreign particles, do not expose open to
atmosphere for long periods.
– If necessary, seal pipe ends using caps or tape.
1 Remove the four (4) fixing screws.
2 Slide the service cover downward and remove it.
3 Pay attention of not falling off the service cover.
1. Service cover.
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10 Servicing
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SMGB0060 rev. 1- 12/2010
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